Your time on the bike is precious, let Shimano make it even better. Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO-WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. The BR-R8170 hydraulic 2-piston disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial braking point. Despite its smaller construction, the system is quieter than ever and easier to maintain.

• Includes L05A-RF pads
• Includes fork adapter for 160mm rotors
• The wireless connection provides a clean cockpit, enhancing the aerodynamic effect and easy maintenance
• Wider pad clearance decreases brake noise
• Maintenance-friendly bleeding process
• Unparalelled ergonomic features, such as raised hood peaks on levers
• Brake control is optimized with light and smooth lever action
• Enhanced modulation thanks to an expanded braking control area
• Compatible with wireless or wired connection

Item Specifications
Adjustable Reach	Yes
Brake Caliper Mount	Flat Mount
Brake Lever Actuation	Hydraulic
Brake Lever Use	Left
Color	Black
Defined Color	Black
Double or Triple	Double
Drivetrain Speeds	12
Front Der/Shifter Compatibility	Shimano Road Di2
Hydraulic Fluid Type	Mineral Oil
Hydraulic Hose Length	1000
Pad Compound	Organic
Rear Der/Shifter Compatibility	Shimano Road Di2
Rotor Included	No